Despite their simplicity, centrifugal pumps often experience repeat failures that even seasoned maintenance and reliability professionals have trouble preventing.
Minimizing pump downtime directly affects the bottom line.
A multistage BB5 diffuser machine in oil transfer service in the Middle East had been in operation for many years without problems.
Within the oil and gas industry, the rotating shafts of equipment—such as pumps, motors, compressors, gearboxes and turbines—perform an essential function in both upstream and downstream applicati
Few industries can tolerate the unscheduled downtime of critical equipment. In refinery operations, it can have particularly serious implications.
Active magnetic bearing (AMB) reliability and availability levels have surpassed oil bearings after 10 years of technological advancements.
Bearing currents occur in specific motor and drive installations and can lead to motor fatigue and failure.
Misalignment is a frequent cause of rolling bearing failure. It can cause cage fracture, which will result in seizure of the bearing, pump failure and costly downtime.
Bearings in centrifugal pumps support hydraulic loads imposed on the impeller, the mass of the impeller and shaft, and loads caused by couplings and drive systems.
With more than 20 years of experience in the oil and gas industry, Lukoil, a Russian oil and gas business, aspired to expand its oil and gas fields.
When pumping river or well water, abrasive particles—such as sand and other debris—erode hardware quickly. This leads to poor performance and costly, frequent repairs.
When a representative from a local distributor noticed a large amount of oil leaking from a semi-autogenous grinding (SAG) mill gearbox at a copper mill, he decided that a permanent solution to th
Industrial equipment users are often confronted with pump parts issues. Handling these issues requires making experience-based decisions and prioritizing.
When designing an application, the design engineer must consider proper bearing lubrication. The lubrication method affects the proper operation of the equipment and the cost of maintaining it.
A Kansas City motor repair shop developed a virtually foolproof process for protecting pump motors from electrical bearing damage caused by stray shaft currents.
This article was written in response to the following question from a reader:
A thrust bearing can run hot for many reasons—such as excessive load and/or speed, inadequate oil supply or an axial clearance that is too tight.
Pumps and Systems, February 2007